said to me, "I shall boil the water on the highest point, and then go
along the top to the other end." He was taking some points of the Kasar
with the compass, and I observed to him, "Take the eastern point." Then
he started. Yusuf called out after him, "Take a camel with you, it is
very distant." Distressed at seeing them go alone, I told Amankee that
if he would follow I would give him a present. He agreed, upon the
condition that he should not be expected to ascent the Kasar; for he
feared the Janoon. We then gave him dates, biscuits, and a skin of
water, and he started after Dr. Overweg. I confess I had my fears about
them. On arriving near the well, we pitched tent near an immense
spreading old ethel, which afforded us some shade. I watched the
changing aspect of the Kasar nearly all the time of our three hours'
ride; and could not help thinking that the more it was examined the more
marvellous did it appear. I then looked out to recognise the place where
I was lost four years ago, and at last I thought I could distinguish the
locality. The day wore on. It blew gales of hot wind. No Germans
appeared, although it had been told them that we should only stop during
the hot hours of the day. However, I anticipated that they would not
arrive before sunset. Hateetah sent word, that as there was little water
he should not move on till to-morrow. This was good news for the
Germans.

At last, about five o'clock P.M., Dr. Overweg appeared. He had
experienced great thirst and fatigue; but, having the assistance of
Amankee, he got back safe. He at once confessed his fears for Dr. Barth.
I began to think this gentleman must either have gone to Ghat, or that
some accident had befallen him. Soon, indeed, we began to have gloomy
apprehensions, and to talk seriously of a search. The Tuaricks were not
very civil, and Hateetah threw all the responsibility of the safety of
my fellow-travellers on me. Dr. Overweg and several people went out in
search of Dr. Barth just before sunset.

Night closed in; no appearance of our friend. I hoisted a lamp on the
top of the ethel, and made large fires as the sun went down, in hopes
that their glare might be seen at a distance from the Kasar. Our
servants returned without Dr. Overweg. He had promised to be back by
sunset, and I began to fear some accident had befallen him likewise.

The evening grew late, and Hateetah came to me, in a very nervous state,
to inquire after the Germans. I endeavou